Proportion of fixations on relevant items for the first five fixations in each trial for experiment 1.

Only fixations starting after the onset of the array are used. At the start of the trial, there is a small, but significant difference between positive and negative cues. The first fixation following a negative cue is even guided toward irrelevant items. A positive cue guides participants towards relevant items immediately, but negative cues also provide correct guidance from the second fixation on.